package project1;
import java.util.Scanner;
public class text2 {
	public static void main(String[] args) {
		Scanner input = new Scanner(System.in);
		System.out.println("请输入磅数");
		double pound = input.nextDouble();
		double kilogram = pound*0.45//1磅=0.454千克
		System.out.println(kilogram);
	}

}
